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叉车起动性能良好的条件有哪些?

来源:https://www.jnhgjx.net/ 日期:2022-06-11 发布人:hangong

叉车在冬季起动为什么困难?不仅决定于本身的技术状况,还受外界气温的影响。冬季低温下起动更困难,主要是由如下原因所致:

Why is forklift difficult to start in winter? It is not only determined by its own technical conditions, but also affected by the external temperature. It is more difficult to start at low temperature in winter, which is mainly caused by the following reasons:
⑴冬季气候寒冷,环境温度低,机油粘度变大,各运动机件的摩擦阻力增加,使起动转速降低,难以起动。
⑴ in winter, the weather is cold, the ambient temperature is low, the oil viscosity increases, and the friction resistance of all moving parts increases, which reduces the starting speed and makes it difficult to start.
⑵蓄电池容量随温度下降而减少,使起动转速进一步降低。
(2) the capacity of the battery decreases with the temperature drop, further reducing the starting speed.
⑶由于起动转速降低,压缩空气渗漏增多,气缸壁散热量变大,致使压缩终了时空气的温度和压力大为降低,使柴油发火的延迟期增长,严重时甚至不能燃烧。
(3) as the starting speed decreases, the leakage of compressed air increases, and the heat dissipation of cylinder wall increases, resulting in a significant reduction in air temperature and pressure at the end of compression, increasing the delay period of diesel ignition, and even failing to burn in serious cases.
⑷低温下的柴油粘度变大,使喷射速度降低,加上空气在压缩终了时的旋流速度、温度和压力都比较低,使喷入气缸的柴油雾化质量差,难以与空气迅速形成良好的可燃气体并及时发火燃烧,甚至不能着火,导致起动困难。
(4) the viscosity of diesel oil at low temperature increases, which reduces the injection speed. In addition, the swirl speed, temperature and pressure of air at the end of compression are relatively low, which makes the atomization quality of diesel oil injected into the cylinder poor. It is difficult to quickly form a good combustible gas with air and ignite in time, or even fail to ignite, resulting in difficult starting.
叉车起动性能良好的条件有哪些?
What are the conditions for good forklift starting performance?
⑴要有足够的起动转速。起动转速高,缸内的气体渗漏量少,压缩空气向气缸壁传热的时间短,热量损失少,使压缩终了时的气体温度和压力得以提高。一般要求转速在100转/分以上。⑵ 气缸的密封性要好。这可进一步减少漏气量,保证压缩终了时气体有足够的燃烧温度和压力,气缸的压缩压力不得低于标准值的80%。
(1) there shall be sufficient starting speed. High starting speed, less gas leakage in the cylinder, short time for compressed air to transfer heat to the cylinder wall and less heat loss, so that the gas temperature and pressure at the end of compression can be increased. Generally, the speed shall be above 100 rpm. ⑵ the cylinder has good sealing performance. This can further reduce the air leakage, ensure that the gas has sufficient combustion temperature and pressure at the end of compression, and the compression pressure of the cylinder shall not be less than 80% of the standard value.
⑶ 要求发动机相对于运转机件之间的配合间隙适当,且润滑良好。
(3) the matching clearance between the engine and the running parts shall be appropriate and well lubricated.
⑷ 蓄电池要有足够的起动电容量,且起动电路的技术状况正常。
(4) the battery shall have sufficient starting capacitance and the technical condition of the starting circuit shall be normal.
⑸ 起动油量符合规定,喷射质量良好,且喷油提前角要符合要求。
(5) the starting oil quantity shall meet the requirements, the injection quality shall be good, and the injection advance angle shall meet the requirements.
⑹ 使用符合要求的燃料
(6) use qualified fuel
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